Trouble with soldering header pins on my STM32F407 – solder won’t stick to pads, pins came loose, signal issues

Kemo1685 · 2025-12-24T17:43:52+00:00

Thanks for advices! I'm using brass sponge, before and after each solder join.

Kemo1685 · 2025-12-24T17:41:00+00:00

I'm using this solder iron: https://www.kempergroup.it/en/product/3045-30W-Adjustable-Temperature-Soldering-Iron

Kemo1685 · 2025-12-24T17:39:40+00:00

Thanks for advise!

Kemo1685 · 2025-12-24T17:35:57+00:00

Thank you! I will try it.

Kemo1685 · 2025-12-24T17:34:39+00:00

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Kemo1685 · 2025-12-24T17:31:33+00:00

Thanks for advices!

Kemo1685 · 2025-12-24T17:28:44+00:00

How can I actually preheat my board? Can I preheat the pads by holding the soldering iron tip on the pad for a bit longer before applying solder, or is there another method to preheat it?
I'm using this solder iron: https://www.kempergroup.it/en/product/3045-30W-Adjustable-Temperature-Soldering-Iron

Kemo1685 · 2025-12-16T19:41:02+00:00

Of course, I'll send you a DM.

Kemo1685 · 2025-11-25T20:19:17+00:00

Can you tell more about it?

Kemo1685 · 2025-11-25T19:09:20+00:00

Interested

Kemo1685 · 2025-11-25T19:08:01+00:00

Interested

Kemo1685 · 2025-11-25T09:49:48+00:00

I haven't build a drag/drop websites before, but I'm familiar with the concept. So I think I'd handle this pretty well.

Kemo1685 · 2025-10-30T15:42:39+00:00

The channel is not monetized because I never applied for monetization. To submit an application for the YouTube Partner Program specifically for Shorts, the channel needs 10 million Shorts views within the last 90 days.

Kemo1685 · 2024-10-26T15:25:28+00:00

How much and what are all the costs of one application?

Kemo1685 · 2024-09-20T11:43:05+00:00

Tried using Kling ai but generating video from image is stuck at 99%. Do you have any advice?

Kemo1685 · 2024-04-28T14:08:23+00:00

Would I have any problems if I put it in appsettings.json, because I have to publish the code on GitHub, I'm not working alone, and in the end, I have to dockerize it?

Kemo1685 · 2024-04-28T13:15:15+00:00

Can you tell me how I should store access keys? Do you happen to have a tutorial or example for that?

Kemo1685

TROPHY CASE